modules/m_tb.c

   1 /* modules/m_tb.c
   2  *
   3  *  Copyright (C) 2003 Lee Hardy <lee@leeh.co.uk>
   4  *  Copyright (C) 2003-2005 ircd-ratbox development team
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions are
   8  * met:
   9  *
  10  * 1.Redistributions of source code must retain the above copyright notice,
  11  *   this list of conditions and the following disclaimer.
  12  * 2.Redistributions in binary form must reproduce the above copyright
  13  *   notice, this list of conditions and the following disclaimer in the
  14  *   documentation and/or other materials provided with the distribution.
  15  * 3.The name of the author may not be used to endorse or promote products
  16  *   derived from this software without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  20  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  21  * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
  22  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  23  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  24  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  26  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  27  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  28  * POSSIBILITY OF SUCH DAMAGE.
  29  *
  30  * $Id: m_tb.c 1349 2006-05-17 17:37:46Z jilles $
  31  */
  32
  33 #include "stdinc.h"
  34 #include "tools.h"
  35 #include "send.h"
  36 #include "channel.h"
  37 #include "client.h"
  38 #include "common.h"
  39 #include "config.h"
  40 #include "ircd.h"
  41 #include "irc_string.h"
  42 #include "s_conf.h"
  43 #include "msg.h"
  44 #include "modules.h"
  45 #include "hash.h"
  46 #include "s_serv.h"
  47
  48 static int ms_tb(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]);
  49
  50 struct Message tb_msgtab = {
  51         "TB", 0, 0, 0, MFLG_SLOW,
  52         {mg_unreg, mg_ignore, mg_ignore, {ms_tb, 4}, mg_ignore, mg_ignore}
  53 };
  54
  55 mapi_clist_av1 tb_clist[] =  { &tb_msgtab, NULL };
  56 DECLARE_MODULE_AV1(tb, NULL, NULL, tb_clist, NULL, NULL, "$Revision: 1349 $");
  57
  58 /* m_tb()
  59  *
  60  * parv[1] - channel
  61  * parv[2] - topic ts
  62  * parv[3] - optional topicwho/topic
  63  * parv[4] - topic
  64  */
  65 static int
  66 ms_tb(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
  67 {
  68         struct Channel *chptr;
  69         const char *newtopic;
  70         const char *newtopicwho;
  71         time_t newtopicts;
  72         struct Client *fakesource_p;
  73
  74         chptr = find_channel(parv[1]);
  75
  76         if(chptr == NULL)
  77                 return 0;
  78
  79         newtopicts = atol(parv[2]);
  80
  81         /* Hide connecting server on netburst -- jilles */
  82         if (ConfigServerHide.flatten_links && !HasSentEob(source_p))
  83                 fakesource_p = &me;
  84         else
  85                 fakesource_p = source_p;
  86
  87         if(parc == 5)
  88         {
  89                 newtopic = parv[4];
  90                 newtopicwho = parv[3];
  91         }
  92         else
  93         {
  94                 newtopic = parv[3];
  95                 newtopicwho = fakesource_p->name;
  96         }
  97
  98         if (EmptyString(newtopic))
  99                 return 0;
 100
 101         if(chptr->topic == NULL || chptr->topic_time > newtopicts)
 102         {
 103                 /* its possible the topicts is a few seconds out on some
 104                  * servers, due to lag when propagating it, so if theyre the
 105                  * same topic just drop the message --fl
 106                  */
 107                 if(chptr->topic != NULL && strcmp(chptr->topic, newtopic) == 0)
 108                         return 0;
 109
 110                 set_channel_topic(chptr, newtopic, newtopicwho, newtopicts);
 111                 sendto_channel_local(ALL_MEMBERS, chptr, ":%s TOPIC %s :%s",
 112                                      fakesource_p->name, chptr->chname, newtopic);
 113                 sendto_server(client_p, chptr, CAP_TB|CAP_TS6, NOCAPS,
 114                               ":%s TB %s %ld %s%s:%s",
 115                               use_id(source_p), chptr->chname, (long) chptr->topic_time,
 116                               ConfigChannel.burst_topicwho ? chptr->topic_info : "",
 117                               ConfigChannel.burst_topicwho ? " " : "", chptr->topic);
 118                 sendto_server(client_p, chptr, CAP_TB, CAP_TS6,
 119                               ":%s TB %s %ld %s%s:%s",
 120                               source_p->name, chptr->chname, (long) chptr->topic_time,
 121                               ConfigChannel.burst_topicwho ? chptr->topic_info : "",
 122                               ConfigChannel.burst_topicwho ? " " : "", chptr->topic);
 123         }
 124
 125         return 0;
 126 }